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Round|Lab Grown|IGI

1.00ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG804642525

Shape and cutting style on the report: Round brilliant

Certificate IGI LG804642525

Diamond specifications and retailer prices

From $655 AUD
$460 USD
As of October 31, 2026
2 retailers carry this diamond
Most expensive: $655 AUD at Brilliant Earth
View at Brilliant Earth

About this 1ct lab-grown round diamond

This 1ct lab-grown round sits in the classic one-carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG804642525 or 804642525. Listed at 2 retailers as of October 31, 2026. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.00
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle41.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG804642525
Dimensions6.39 × 6.44 × 3.94 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.39 mm6.44 mm1.00 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG804642525
Side View
Table 59.0%Crown 34.3°Girdle: MED-STKPavilion 41.1°Culet: NoneDepth 61.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
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Price History

Last verified: Oct 31
Current: $655 AUD|Low: $396 AUD|High: $889 AUD|Avg: $597 AUD
Brilliant Earth
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
August 5, 2026
Retailer 7$396 AUD
Retailer 3$421 AUD
Retailer 5$439 AUD
Retailer 2$567 AUD
Brilliant Earth$655 AUD
Retailer 4$655 AUD
Retailer 8$673 AUD
Retailer 6$889 AUD

9 data points across 8 retailers

2 retailers

Retailer 1
-
$567 AUD
$398 USD
Price last confirmed 90 days ago
Most Expensive
B
Brilliant Earth
20509876A · Oct 31
$655 AUD
$460 USD
View
1 more retailer has this diamond

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B
1.00ct Round
$655 AUD